El Dorado, AR has a population of 18,393 and is the 2,374th largest city in the United States. The population density is 1,136 per sq mi which is 1949% higher than the Arkansas average and 1154% higher than the national average. The median age in El Dorado is 36 which is approximately 5% lower than the Arkansas average of 38. In El Dorado, 54% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 76% of El Dorado residents were born in Arkansas, 22% were born out of state, 0% were born outside of the United States and 2% were foreign born.